Protective backpack



FIG. 1 is perspective view of the protective backpack of my new design.

FIG. 2 is a front elevational view of the backpack of my new design.

FIG. 3 is a right side elevational view thereof.

FIG. 4 is a left side elevational view thereof.

FIG. 5 is an elevational view of the back thereof.

FIG. 6 is a top plan view thereof.

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view from the rear thereof.

It is acknowledged that the cross-hatched line-work indicating a woven material in the figures is continuous throughout the surface to which it is applied.

The broken line elements shown in FIG. 1, are environmental, do not constitute a part of my new design. 

CLAIM The ornamental design for a protective backpack, as shown and described. 